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Patent US3401783A successfully refreshed from Google Patents.
US3401783A
Expired / Lapsed
US
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Proportional ribbon feed mechanism
Assignee: International Business Machines Corp
•
Filing: 1965-12-30
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Granted: 1968-09-17
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Expires: 1985-12-30
Abstract
No abstract record available.
Inventors
- 👤 James R Norwood
- 👤 Joseph S Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:27
CPC Classifications
B; B41; B41J; B41J33/00; B41J33/14; B41J33/36; B41J35/00; B41J35/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US834947A
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US1131808A
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US2224766A
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US2411723A
Cited
US2425967A
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US2609077A
Cited
US2818155A
Cited
US2930470A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-17 | 1972-03-18 | 1972-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-17 | 1976-03-18 | 1976-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-17 | 1980-03-18 | 1980-09-17 | $7700.00 | Window Closed / Lapsed |